Latch mechanism for doors and gates.



G. A. E. ARONSON.

LATCH MECHANISM FOR BOOKS AND GATES.

APPLICATION FILED DEO.15, 1913.

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' Patented Oct. 27, 1914.

G. A. E. ARONSON.

LATCH MEGHANISM FOR DOORS AND GATES.

APPLICATION FILED DBO.15,1913.

1, 1 1 5,271 Patented Oct. 27, 1914.

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UNITED STATES PATENT OFFICE.

GUSTAF AXEL EMIL ARONSON, OF KISA, SWEDEN, ASSIGNOR OF ONE-HALF TO STURE v RICHARD DETLOW WES'IBELL, OF STOCKHOLM, SWEDEN.

LATCH MECHANISM FOR DOORS AND GATES.

Applicationfiled December 15, 1913.

To all whom it may concern Be it known that I, GUSTAF AXEL EMIL ARoNsoN, a subject of theKing of Sweden, residing at Kisa, in the Kingdom of Sweden, have invented new-and useful Improvements in Latch Mechanisms for Doors and Gates, of which the following is a specification, reference being had to the drawings accompanying and forming a part thereof.

My invention relates to a locking arrangement of the type in which the locking parts (the pawls) are arranged to swing horizontally or nearly horizontally and in or out of the way of the parts with which they are to engage when looking and in which the handles of the lock move in a vertical or approximately vertical direction.

My invention is illustrated in the accoms panying drawings in three different forms.

Figure 1 and Fig. 2 show the first form of the lock as viewed from the side and from above. Fig. 8 and Fig. 4 show the second form in similar manner, and Fig. 5 and Fig. 6 show the third form. Fig. 7 and Fig. 8 show different arrangements for bolting the lock, and Fig. 9 shows a detail of Fig. 8.

, According to Figs. 1 and 2 the frame of the lock consists of a mounting or plate 1, lJ-shaped in cross-section, which by means of a bolt 2, can be fastened to the part 3 of the door, or gate. Through the plate 1 at or near each end of the plate, are inserted the studs 4 about which the pawls 5 are arranged to pivot. On the parts of the studs 4 which project below the plate 1 is journaled a shaft 6 to which the handles 7 are fastened. The handles are arranged to swing in a vertical plane, and from their bosses extend studs or arms 8 which enter openings or slots 9 in the pawls 5. When the handles 7 are swung downward the arms 8 will swing the pawls inward, so as to open the lock. This swinging motion is counteracted by a spring 10 within the plate or.mounting 1, which spring tends to swing the pawls outward so as to effect the locking when the handle is dropped. On the other hand each pawl 5, when acted upon by the stationary part 11, may swing inward without beingprevented by the arm 8 when the door or gate is closed when the handle is dropped. Fig. 2 shows a suitable arrangement for holding the pawls in their outermost position consisting of a U-shaped spring 13, the ends of which are directed toward the pawls 5. When this spring is not Specification of Letters Patent.

Patented Oct. 27, 1914.

Serial No. 806,731.

in tension, as shown on the drawing in fulldrawn lines, it does not prevent the pawls from swinging inward, but when the ends of the spring are forced apart, which may be effected by turning with a key the part 14 which is located between said ends, the pawls Wlll be prevented from swinging inward. This locking arrangement may be modified as shown in Fig. 7, where the spring 13 is replaced by two studs 27 which, kept together by a spring 28, partly embrace the stud 12, and partly the member 14, which when turned will act upon the studs 27 so that they move into a position to prevent the pawls 5 from swinging inward.

In the modified form shown in Figs. 3 and 4 the pawls 5 are also mounted so that they swing about studs 4 fastened in the upper and lower parts of a plate 15, U-shaped in cross-section, which plate is fastened by means of two lugs 16 to the door or the gate. In the ends of the plate 15 is journaled the shaft 6 and the handles 7 are fastened to the ends of the shaft 6 which project beyond the plate. Each pawl 5 is loosely connected with one end of a link 17 the other end of which is provided with a cross-head l8 and enters between two studs 19 which project from the shaft 6 and contact with the crosshead 18. When the handle 7 is moved downward these studs 19 will act through the crossheads 18 and the links 17 so that the pawls 5 swing inward and open the lock. Even in this case each pawl, independently of the other parts of the lock, can swing inward when it strikes the stationary part 11 upon the closing of the door, or gate.

Figs. 5 and 6 show a form, which as far as its construction is concerned, is considerably simpler than either of the above described forms, and which therefore by reason of its low cost, its strength and durability and so forth is in many cases more practical than those. In this case also the pawls 5 are embraced by a plate 20, U- shaped in cross-section and preferably constructed from a bent sheet metal. At the ends, or close to the ends, of this plate the studs 4 are inserted through its upper and lower sides, each stud being formed from a round iron bar. These iron bars project above the upper side of the plate 20 and are bent into eyes 21, in which is journaled the shaft 6 which is also formed from a round iron bar, the ends of which are first bent the pawls 5, and then bent backward so as to form the handles 7 which if so desired may be nicely finished. It is thus seen that the shaft 6 together with the parts 22, which act upon the pawls 5, and also the handles 7 are all constructed in one piece from a piece of round bar iron. When the handle 7 is moved downward the parts 22 will act upon the tails of the pawls 5 so that said pawls will swing inward and open the lock. The plate 20 is fastened to the door or gate by means of the bowshaped part 24 made of round iron and embracing the plate and the j stationary part of the lock which codperates with .the pawls 5 is also made of a round iron 1 bar formed into a staple 25. In order to i prevent the pawls .5 from being swung out 1 too far by the spring 1 0 the middle part of i the shaft 6 is provided with a bend 26 which, as shown on the drawing, will touch against the upper part of the bow 24 and thus prevent the shaft 6 together with the handles '7 from swinging upward beyond a certain limit. 1

Fig. 8 shows a locking arrangement particularly suitable for the form of the lock shown in Figs. I3 and'l. The bolt 29, a side view of which is shown in Fig. 9, is arranged to be moved longitudinally back and forth in a slot either in the upper or in the lower side of the plate 20. The bolt has two studs 30 which in the position shown in the drawing are both located in the path of the pawls so as to prevent them from swinging inward. The bolt 29 is equipped with a handle 31 and a guard plate 32 which in any position of the bolt will cover the slot in the plate in which the bolt is arranged to be moved. In one of the pawls 5 is a slot 33 of such shape that the stud 30 which enters the slot will at one of its extreme positions prevent the pawl from swinging, and at its other extreme position it will permit the pawl to swing. 1

Having now described my invention and in what manner it is to be performed, I .declare that what I claim and .desire to secure by Letters Patent is:

1. In a latch mechanism for doors and gates, the combination of a casing of U- .shaped cross-section, latch members pivoted in said. casing and arranged to swing in an approximately horizontal direction, a shaft supported by said casing, means for bringing said shaft to engage with the latch memhers, and a handle secured to said shaft on each side of the latch mechanism and adapted to swing approximately vertical direction, substantially as and for the purpose set forth.

In a latch mechanism for doors and gates, the combination of a casing of IU shaped cross-section, latch members pivoted in said casing and arranged to swing in an approximately horizontal direction and pro vided with slots, a shaft supported by said casing and provided with studs adapted to engage with the slots in the latch members, and a handle secured to said shaft on each side-of the latch mechanism and adapted to swing in an approximately vertical direction, substantially as and for the purpose set forth.

3. In a latch mechanism for doors and gates, the combination of a casing of U- shaped crosssection, latch members pivoted in said casing and arranged to swing in .an approximately horizontal direction, a shaft supported by said casing, means for bringing .said shaft to engage with the latch members, means for locking said latch members, and a handle secured to said shaft on each side of the latch mechanism and adapted to swing in an approximately vertical direction,"substantially as and for the p11rpose set forth.

GUSTA'F AXEL EMIL ARON-SON.

lYitnesses KARL DAHLQUIST, FLnnRI-LE Sonwrrrnndw.

Copies of this patent may be obtained for five cents each; h? addressing the "Gommission-er of Ia tents, Washington, D. G. 

